If you're looking for a crowd-pleasing, easy-to-make dish that requires minimal effort but delivers maximum flavor, this Crockpot Green Bean Casserole Recipe is for you! With its creamy texture, savory taste, and slow-cooker convenience, it’s the perfect side for holidays, potlucks, or a simple family dinner. Plus, making it in a crockpot frees up oven space, making it a go-to during busy cooking times. Read on to learn everything you need to know to prepare this tasty, comforting dish!

What is Crockpot Green Bean Casserole?
Crockpot Green Bean Casserole is a slow-cooked version of the classic green bean casserole, traditionally made in the oven. The key ingredients include green beans, cream of mushroom soup, and crispy fried onions. What sets this dish apart is the ease of preparation thanks to the crockpot, which slowly cooks the ingredients to create a rich, flavorful dish with minimal hands-on work. Perfect for busy holidays or casual dinners, this dish can be made in advance, giving you more time to focus on other dishes or enjoy time with loved ones.
Ingredients List for Crockpot Green Bean Casserole
To make the ultimate Crockpot Green Bean Casserole, you'll need a few simple, pantry-staple ingredients. Here’s what you'll need:
- 4 cans of green beans (14.5 oz each) – Drained, or substitute with 6 cups of fresh green beans, trimmed.
- 2 cans of cream of mushroom soup (10.5 oz each) – The creamy base that gives the casserole its signature flavor.
- 1 cup of milk – To help thin the sauce and make it creamy.
- 2 teaspoons of soy sauce – Adds a savory, umami kick.
- 1 teaspoon garlic powder – Enhances the overall flavor profile.
- 1 teaspoon onion powder – For an extra layer of flavor.
- ¼ teaspoon black pepper – Adds a subtle spiciness.
- 1 cup shredded cheddar cheese (optional) – For a cheesier version of the casserole.
- 1 can (6 oz) of crispy fried onions – A must-have for that crispy, crunchy topping.
Optional Add-Ons:
- Bacon bits or cooked bacon slices – For added crunch and smoky flavor.
- Parmesan cheese – For a sharp, salty addition.
Substitutions and Variations
Cooking for a crowd or have dietary restrictions? Here are some common substitutions and variations you can try:
- Fresh vs. Canned Green Beans: If you prefer fresh green beans over canned, use 6 cups of trimmed green beans. You’ll need to blanch them in boiling water for about 3-4 minutes before adding them to the crockpot to ensure they soften during cooking.
- Cream of Mushroom Soup Substitute: If you're not a fan of cream of mushroom soup, substitute it with cream of chicken, cream of celery, or even a homemade cream sauce. For a dairy-free option, use coconut milk or almond milk-based cream alternatives.
- Cheese Lovers: If you want a cheesier casserole, add 1 cup of shredded cheddar cheese or Monterey Jack cheese. It will add an extra layer of richness.
- Vegetarian/Vegan: Make the dish vegetarian by using vegetable-based cream soup and vegan-friendly crispy fried onions. For a vegan version, swap out the dairy with plant-based milk and vegan cheese.
- Healthier Version: Replace the cream of mushroom soup with a homemade, lighter version using Greek yogurt or a lower-fat alternative. Opt for reduced-fat cheese and fried onion substitutes.
Step-by-Step Cooking Instructions

Making this Crockpot Green Bean Casserole couldn’t be easier. The beauty of the slow cooker is that you can set it and forget it, allowing you to prepare other dishes or relax while it cooks. Here’s how to do it:
Step 1: Prepare the Ingredients
Start by gathering all your ingredients. If using fresh green beans, wash, trim, and blanch them in boiling water for 3-4 minutes, then drain and set them aside. Drain canned green beans thoroughly to remove excess liquid.
Step 2: Combine the Creamy Base
In a large mixing bowl, combine the cream of mushroom soup, milk, soy sauce, garlic powder, onion powder, and black pepper. Stir well until the mixture is smooth and creamy. This will form the rich sauce that brings the casserole together.
Step 3: Layer the Green Beans and Sauce
Spray the inside of your crockpot with nonstick spray to prevent sticking. Add the drained green beans to the bottom of the crockpot. Pour the cream of mushroom mixture over the beans, ensuring all the green beans are well-coated.
Step 4: Add Cheese (Optional)
If you’re opting for a cheesy casserole, sprinkle the shredded cheddar cheese evenly over the green bean mixture. The cheese will melt into the casserole as it cooks, giving it a gooey, rich texture.
Step 5: Cook on Low
Set the crockpot to low heat and cook for 4-5 hours, or until the green beans are tender and the sauce is bubbling. Avoid opening the lid too often, as this can release heat and slow down the cooking process.
Step 6: Add Crispy Onions
About 30 minutes before serving, sprinkle the crispy fried onions on top of the casserole. Cover the crockpot again and continue cooking on low for another 30 minutes, allowing the onions to become crispy and golden.
How to Cook Crockpot Green Bean Casserole: A Step-by-Step Guide
- Gather Ingredients: Collect all ingredients before starting.
- Prepare Green Beans: Blanch fresh green beans or drain canned ones.
- Mix Sauce: Combine cream of mushroom soup, milk, and seasonings.
- Layer in Crockpot: Layer green beans and pour sauce over them.
- Cook on Low: Set your crockpot to low and cook for 4-5 hours.
- Add Fried Onions: Sprinkle the fried onions during the last 30 minutes.
By following this guide, you’ll ensure your green bean casserole is cooked perfectly every time.
Common Mistakes to Avoid
While this recipe is straightforward, there are a few common mistakes to watch out for:
- Overcooking the Green Beans: Avoid cooking the casserole on high, as this can cause the green beans to become mushy. Stick to low heat for slow, even cooking.
- Adding Fried Onions Too Early: If you add the fried onions too soon, they will become soggy. Always add them in the last 30 minutes to maintain their crispy texture.
- Skipping the Blanching Step: If you're using fresh green beans, don't skip blanching them. This quick boil helps maintain the beans' texture during the long cook time.
Serving and Presentation Tips
Crockpot Green Bean Casserole is a visually appealing dish with its vibrant green beans, creamy sauce, and crispy golden onions. Here are a few serving and presentation tips to elevate your dish:
How to Serve Crockpot Green Bean Casserole
- Serve the casserole directly from the crockpot to keep it warm during meals. The slow cooker’s “keep warm” function will maintain the right temperature for serving.
- For family-style meals, place the crockpot on the dining table with a serving spoon so guests can help themselves. This is especially helpful during holiday meals.
- If serving at a potluck, transfer the casserole into a shallow serving dish for a more polished look. Garnish with extra fried onions for an appealing presentation.
Presentation Ideas for Crockpot Green Bean Casserole
- Garnish with Fresh Herbs: Add a sprinkle of chopped parsley, thyme, or rosemary to give the casserole a pop of color and freshness.
- Serve in Individual Ramekins: For a more formal presentation, divide the casserole into individual ramekins and top each with crispy onions and a sprig of herbs.
- Add Color: Mix in other colorful vegetables, like red bell peppers or diced carrots, for visual appeal and extra flavor.
Crockpot Green Bean Casserole Recipe Tips
- Make It Ahead: You can prepare the casserole the night before and store it in the fridge. Just wait to add the fried onions until you're ready to cook and serve.
- Crispier Onions: For an extra-crispy topping, toast the fried onions in a separate skillet for a few minutes before adding them to the crockpot.
- Double the Recipe: If you're serving a large crowd, you can easily double the ingredients. Just ensure you have a large enough crockpot, or consider using two.
Frequently Asked Questions (FAQs)
1. Can I use frozen green beans?
Yes, you can use frozen green beans. Just thaw them first and drain any excess water before adding them to the crockpot.
2. Can I make this recipe ahead of time?
Absolutely! You can assemble the casserole up to 24 hours in advance and store it in the fridge. Just wait to add the crispy onions until right before serving.
3. How do I store leftovers?
Store leftovers in an airtight container in the fridge for up to 3-4 days. Reheat in the microwave or oven until warmed through.
4. Can I freeze Crockpot Green Bean Casserole?
Yes, you can freeze the casserole (without the crispy onions) for up to 2 months. When reheating, add fresh fried onions for the best texture.
Conclusion
This Crockpot Green Bean Casserole Recipe is a delicious, low-maintenance dish perfect for any occasion. With its creamy sauce, tender green beans, and crispy onion topping, it’s sure to be a hit with your family and friends. Whether you're hosting a holiday dinner or preparing a weeknight meal, this easy-to-make side dish will save you time while delivering amazing flavors. So, grab your crockpot, gather your ingredients, and give this recipe a try—you won’t be disappointed!
PrintCrockpot Green Bean Casserole Recipe
This Crockpot Green Bean Casserole recipe is a simple, flavorful side dish made with fresh green beans, creamy mushroom soup, and crispy fried onions. Perfect for holiday meals or gatherings. Use the crockpot for hands-free cooking and a tender, savory casserole.
- Prep Time: 10 minutes
- Cook Time: 4 hours
- Total Time: 4 hours 10 minutes
- Yield: 6 servings
- Category: Side Dish
- Method: Slow Cooker
- Cuisine: American
- Diet: Vegetarian
Ingredients
- Fresh or canned green beans
- Cream of mushroom soup
- Milk
- Fried onions
- Soy sauce
- Salt and pepper
Instructions
- Mix the cream of mushroom soup, milk, soy sauce, salt, and pepper.
- Place green beans in the crockpot and pour the mixture over the beans.
- Stir and cook on low for 4-5 hours.
- Just before serving, top with crispy fried onions and cook for an additional 10 minutes.
- Serve hot and enjoy!
Notes
- You can use fresh or canned green beans depending on your preference.
- Add cheese for a twist or extra flavor.
Nutrition
- Serving Size: 1 cup
- Calories: 150 kcal
- Sugar: 3g
- Sodium: 500mg
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